Php/docs/function.eio-nop
eio_nop
(PECL eio >= 0.0.1dev)
eio_nop — Does nothing, except go through the whole request cycle
Description
eio_nop
([ int $pri
= EIO_PRI_DEFAULT
[, callable $callback
= NULL
[, mixed $data
= NULL
]]] ) : resource
eio_nop() does nothing, except go through the whole request cycle. Could be useful in debugging.
Parameters
pri
The request priority:
EIO_PRI_DEFAULT
,EIO_PRI_MIN
,EIO_PRI_MAX
, orNULL
. IfNULL
passed,pri
internally is set toEIO_PRI_DEFAULT
.callback
callback
function is called when the request is done. It should match the following prototype:void callback(mixed $data, int $result[, resource $req]);
data
is custom data passed to the request.
result
request-specific result value; basically, the value returned by corresponding system call.
req
is optional request resource which can be used with functions like eio_get_last_error()
data
Arbitrary variable passed to
callback
.
Return Values
eio_nop() returns request resource on success or FALSE
on error.